Question

Difference between the burning of a candle and the burning of a fuel like coal​

Answer 1

Candle burns with a flame but coal does not burns with a flame. Also coal is a carbon product and its burning is harmful for environment but candle is made from wax its burning is not as much harmful as burning of coal .

Answer 2

Burning of a candle will not cause air pollution and will again be recast into a candle but when we burn a coal then it will produce a lot of smoke it will cause a lot of air pollution and once it is used it can't be used again